I'm a free speech bigot. I don't like censorship; I just don't think it's a good thing.

If you have an idea that you can't get out of your head, do a startup. Otherwise join a startup.

Startups are rapidly changing systems. If you use an annual review cycle, you aren't getting feedback at the same pace that you need to adapt and change the business.

You simply can't be tentative in a startup. You have to go for it at every chance you get. And if the leader of the organization is anxious, his or her fear pervades the organization. Everything comes from the top in a company. So if you are starting a company or building one, face your fears and move past them. It's critically important to your company.

Early in a startup, product decisions should be hunch driven. Later on, product decisions should be data driven.

Foursquare's adoption of a game dynamic when it launched is a particularly clever implementation of a social hook.

Games are the most social of all things on the web.